The coolant level is fine, the vapouriser has not got a seperate coolant sensor, the only one I can see is to the right of the thermostat, I disconnected that momentarily and it changed the revs slightly so I guess that's working, I'll try reseating the ecu, is it the main one on the bulkhead because there is something that resembles an ecu on the left in front of the power steering fluid reservoir
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